I've been asked a lot lately if tennis is clean or not. I don't know any more how you judge whether a sport is clean. If one in 100 players is doping, in my eyes that isn't a clean sport.

I am not stroppy at all.

I never read. The paper or anything. I watch a lot of movies, and TV series and stuff. But I never, never read.

I've had an entrepreneurial mindset from a young age and I've been interested in companies and products that are a little bit different.

I am not anti-English, and I never was.

Having a normal knee would make life a lot easier.

I'm incredibly fortunate and it's important to me to make sure that I give back where I can.